Programming

Hi,

Could any one tell me solution for this.

i have a library in my /usr/lib and latest in /myhome/lib/ (thay differ functionality symbols my application uses symbols from latest lib).



when compile and link my application , every thing goes fine

but when running the application ld loads this library from /usr/lib
i want it to take this libary from /myhome/lib instead of /usr/lib
how can i tell this to ld.so

i heard of LD_CONFIG env variable(if any one knows how to use it plz let me know)

any help would be highly appreciated

ELF systems (Solaris, xxxBsd, Linux, Tru64 ) use LD_LIBRARY_PATH
AIX uses LIBPATH
IRIX uses LD_LIBRARYN32_PATH and LD_LIBRARYN64_PATH
HPUX PA-RISC systems use SHLIB_PATH

unfortunately i am allowed to change LD_LIBRARY_PATH outside my application. i was trying to replace this library inside the application.

Set the SONAME of the library to it's full path

as in $(CC) -shared -W1,-soname,/myhome/lib/libfoo.so foo.o -o /myhome/libfoo.so

then when an application links against it the full path will be recorded.

confirm with ldd.

Also you may want to look at -rpath

If this is production code, don't link against your own directory tree. Terrible idea. Instead compile your shared library into a archive (.a). Link statically against the .a file.

cc myprogram.c /myhome/lib.libwhatever.a -o myprogram

The executable image will then run pretty much anywhere, on any system that supports the archictecture on your development system - and that has the same libc The downside is that the app will use more memory.